Cita APA

Estados Unidos. Geological Survey, & Estados Unidos. Geological Survey. (1971). Topographic mapping: Status and progress of operation ([1. edition].). Washington: The Survey.

Citación estilo Chicago

Estados Unidos. Geological Survey, y Estados Unidos. Geological Survey. Topographic Mapping: Status and Progress of Operation. [1. edition]. Washington: The Survey, 1971.

Cita MLA

Estados Unidos. Geological Survey, y Estados Unidos. Geological Survey. Topographic Mapping: Status and Progress of Operation. [1. edition]. Washington: The Survey, 1971.